GENERAL DEscriptION

The SGM803, SGM809 and SGM810 are integrated microprocessor supervisory devices. Compared with the design using a single IC or discrete components, this integration design has the advantage of improving system stability and accuracy.

The devices can be reset under power-up, power-down or even voltage reduction brownout conditions. When VCC is as low as 1V, the reset output can still operate. On the power-on state, the internal timer maintains a 240ms reset assertion that keeps the microprocessor in the reset state until the condition is stable.

The SGM803 has an open-drain RESET output that needs a resistor pulled up to VCC. The SGM809 has a push-pull RESET output. And the SGM810 has a push-pull RESET output. All devices provide eight reset threshold voltage options for 1.8V, 2.5V, 3V, 3.3V and 5V voltage monitoring.

The devices also feature excellent transient immunity to ignore fast VCC transients. Low current makes the SGM803, SGM809 and SGM810 very suitable for battery-powered applications.

The SGM803, SGM809 and SGM810 are available in Green SOT-23-3 and SOT-23 packages. They operates over an ambient temperature range of -40℃ to +125℃.

PIN CONFIGURATIONS

FEATURES

• Superior Upgrade for MAX803/MAX809/MAX810 and ADM803/ADM809/ADM810

• High Accuracy Fixed Detection Options: 1.8V, 2.5V, 3V, 3.3V and 5V

• Low Current Consumption: 13μA (TYP)

• 150ms (MIN) Power-On Reset

• Reset Output Options: Push-Pull RESET Output

• Reset Assertion Down to 1V VCC

• -40℃ to +125℃ Operating Temperature Range

• Available in Green SOT-23-3 and SOT-23 Packages

APPLICATIONS

Computers

Battery-Powered Applications

Portable Equipment

Automotive Equipment

Controllers

Intelligent Instruments

Critical μP Power Monitoring